Repair Service and Repair Manual
Rocker arms
Checking valve clearance
Fig. 67: Checking and adjusting valve clearance
1 Inlet rocker arm 5 Exhaust rocker arm
2 Locknut 6 Rocker ball cap
3 Allen key 7 Valve bridge
4 Key 8 Feeler gauge
u Check valve clearance of cylinder by entering feeler gauge between rocker ball cap 4 and valve
bridge 5. (For more information see: Specific values, page 74.)
u Move feeler gauge back and forth to sense the friction.
w
The gauge shows a slight resistance when pulling.
Information
If the valve clearance is not correct, follow the valve set clearance procedure. (For more informa-
tion see: Setting valve clearance, page 74.)
Setting valve clearance
u Loosen locknut 2 of inlet rocker arm 1.
u Position feeler gauge with correct value between rocker ball cap 4 and valve bridge 5. (For
more information see: Specific values, page 74.)
u Turn the adjusting screw with allen key until the gauge shows a slight resistance when pulling.
u Tighten locknut while holding set screw with allen key in setting position.
u Re-check gauge tight fit.
u Repeat procedure for next valve.
u Mark cylinder when the operation is completed.
u Repeat entire procedure for exhaust rocker arm 5.
Specific values
Use feeler gauge to set valve clearance.
74
© 2021 by Kohler Co. All rights reserved.
KD83V16 33525088901_2_1 EN_US
2021-07
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